so, i think technologically there aren't actually that many examples of systems third and fourth generation systems that have been abject to failures. you mentioned washington, d.c., there is no bike program there. it was limited by its size. from what i can tell, but the absolute unwillingness of the operator, clearchannel, to expand it. the district, department of transportation was actively trying to get clearchannel to expand, clearchannel basically refused to. and it was as you know, i think 0 or 12 stations and 100 bicycles. and we will be starting with several times that here. ~ 10 and quickly ramping up. also i think the people in d.c. don't necessarily see that system as a failure because they learned a lot from it and they started with a system very similar to what we're starting with now and it's been a smash success. so, i'm trying to fully answer your question. [speaker not understood] contributed to failures. am melbourne there are two issues there. how much was required for the system and it's not easy for people to get helmets. they have to. and also from what i understand,